1-20 OF 66 RESULTS FOR

Mystic Creek Member

Results shown limited to content with bounding coordinates.
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Article
Journal: Economic Geology
Published: 01 November 2012
Economic Geology (2012) 107 (7): 1403–1432.
..., and interlayered pyritic argillite and mudstone of the Mystic Creek Member of the Totatlanika Schist Formation. Mystic Creek metarhyolite and alkali basalt (Chute Creek Member) constitute a bimodal pair that formed in an extensional environment. A synvolcanic peralkaline quartz porphyry containing veins...
FIGURES
First thumbnail for: Peralkaline- and Calc-Alkaline-Hosted Volcanogenic...
Second thumbnail for: Peralkaline- and Calc-Alkaline-Hosted Volcanogenic...
Third thumbnail for: Peralkaline- and Calc-Alkaline-Hosted Volcanogenic...
Journal Article
Published: 01 August 2007
Geochemistry: Exploration, Environment, Analysis (2007) 7 (3): 207–223.
... rocks of the Mystic Creek Member of the Totatlanika Schist. Water samples with the lowest pH (many below 3.5), highest specific conductance (commonly >2500 μS/cm) and highest major- and trace-element concentrations are from springs and streams within the quartz–sericite–pyrite alteration zone...
FIGURES
First thumbnail for: Environmental geochemistry at Red Mountain, an unm...
Second thumbnail for: Environmental geochemistry at Red Mountain, an unm...
Third thumbnail for: Environmental geochemistry at Red Mountain, an unm...
Image
Rare earth element patterns for filtered/acidified waters within the alteration zone at Red Mountain and surrounding unmineralized felsic metavolcanic rocks of the Mystic Creek Member, normalized to North American Shale Composite.
Published: 01 August 2007
Fig. 13 Rare earth element patterns for filtered/acidified waters within the alteration zone at Red Mountain and surrounding unmineralized felsic metavolcanic rocks of the Mystic Creek Member, normalized to North American Shale Composite.
Image
Regional and detailed geological maps of the Red Mountain deposit and vicinity. (a) Regional geology (from Gilbert 1977). (b) Detailed geology of the western part of the Red Mountain exploration area (interpretive geologic map of the Red Mountain Prospect, Dry Creek, Alaska, plate 4 in Grayd Resources Corporation 1998). All rock units in (b) are part of the Mystic Creek Member of the Totatlanika Schist.
Published: 01 August 2007
in Grayd Resources Corporation 1998 ). All rock units in (b) are part of the Mystic Creek Member of the Totatlanika Schist.
Image
Distribution of Zn in stream sediment samples. The local background value is an average from 25 unmineralized rock samples collected from the Mystic Creek Member of the Totatlanika Schist (Dusel-Bacon et al. 2004; C. Dusel-Bacon, unpubl. data). White line indicates the approximate limit of visibly altered bedrock. Geology from Gilbert (1977); Grayd Resources Corporation (1998),.
Published: 01 August 2007
Fig. 9 Distribution of Zn in stream sediment samples. The local background value is an average from 25 unmineralized rock samples collected from the Mystic Creek Member of the Totatlanika Schist ( Dusel-Bacon et al . 2004 ; C. Dusel-Bacon, unpubl. data). White line indicates the approximate
Image
Geologic map of the Wood River area (after Wahrhaftig, 1968, 1970; Gilbert, 1977; Gilbert and Bundtzen, 1979; L.K. Freeman, written commun., 2010) showing SHRIMP U-Pb zircon ages and locations of major VMS deposits (Dusel-Bacon et al., 2004, 2010). Letters H, I, and J show the locations of whole-rock geochemical samples from the western area of the Mystic Creek Member presented in Table 1, columns H, I, and J, respectively.
Published: 01 November 2012
the locations of whole-rock geochemical samples from the western area of the Mystic Creek Member presented in Table 1 , columns H, I, and J, respectively.
Image
Elemental plots of whole-rock data for graphitic and siliceous phyllite, slate, and argillite for Sheep Creek rocks (Table 3) compared with mineralized and unmineralized argillite from Bonnifield volcanogenic massive sulfide (VMS) deposits (Dusel-Bacon et al. 2011, 2012). (A) Zr versus Nb; (B) Y versus Nb plotted on tectonic discrimination diagram for felsic igneous rocks (Pearce et al. 1984). Fields for Late Devonian–earliest Mississippian felsic metaigneous rocks from Bonnifield district (Dusel-Bacon et al. 2004, 2010): dotted line, peralkaline metarhyolite from Mystic Creek Member of Totatlanika Schist; dash-dot line, felsic rocks from Sheep, California, and Moose Creek Members of Totatlanika Schist; dashed line, felsic rocks from Keevy Peak Formation, Healy schist, and Wood River assemblage. (C) La–Th–Sc plot; (D) Zr/10–Th–Sc plot. Tectonic discriminant fields shown in Figs. 13C and 13D from Bhatia and Crook (1986).
Published: 19 December 2023
Creek Member of Totatlanika Schist; dash-dot line, felsic rocks from Sheep, California, and Moose Creek Members of Totatlanika Schist; dashed line, felsic rocks from Keevy Peak Formation, Healy schist, and Wood River assemblage. (C) La–Th–Sc plot; (D) Zr/10–Th–Sc plot. Tectonic discriminant fields shown
Image
SEM photomicrographs of Ce-La-F-O accessory minerals in polished thin sections of Mystic Creek Member metarhyolite from the Red Mountain area. (a) Secondary electron image of drill core sample DC-96-3A-273. (b) Backscattered electron  image of rock sample 97ADb60G in which inclusions of the Ce-La-F-O mineral (bastnäsite?) form an arc within albite. Significance of the arcuate shape is presently unknown. Images taken using a LEO 982 field-emission SEM; mineral identifications were made with an attached Oxford Instruments energy dispersive X-ray analyser.
Published: 01 August 2007
Fig. 14 SEM photomicrographs of Ce-La-F-O accessory minerals in polished thin sections of Mystic Creek Member metarhyolite from the Red Mountain area. (a) Secondary electron image of drill core sample DC-96-3A-273. (b) Backscattered electron image of rock sample 97ADb60G in which inclusions
Image
Elemental plots of whole-rock data for mineralized and unmineralized argillite from the Bonnifield deposits. A. Nb vs. Zr. B. Nb vs. Y plotted on the tectonic discriminant diagram for felsic igneous rocks of Pearce et al. (1984). Fields for the Late Devonian-earliest Mississippian felsic metaigneous rocks from the Bonnifield district (Dusel-Bacon et al., 2004, 2010): dotted line = peralkaline metarhyolite from the Mystic Creek Member of the Totatlanika Schist; dash-dot line = felsic rocks from the Sheep, California, and Moose Creek Members of the Totatlanika Schist; dashed line = felsic rocks from the Keevy Peak Formation, Healy Schist, and Wood River assemblage. Values for average shale from Krauskopf and Bird (1995). C, D. CrMF vs. MoMF and VMF vs. MoMF plots of bulk compositions of carbonaceous and graphitic argillite from the Bonnifield district, showing data points that all fall above the sulfate-reducing line; suboxic and oxic fields are above this line; anoxic and sulfidic (euxinic) fields are below. Sulfate-reducing line and method of calculating marine fractions (MF) of Cr and V are from Perkins et al. (2008); no calculation is made for Mo due to its very small (<1 ppm) terriginous component. E. Plot of total organic carbon (TOC) vs. S. Field for sulfate- and iron-limited sediments and regression line for normal oxidized marine sediments are from Berner and Raiswell (1993). Approximate field for anoxic and sulfidic sediments of the Cariaco Basin is from Lyons et al. (2003). Not shown is the field for deep-water sulfidic sediments of the Black Sea, averaging 5.3 ± 1.1% S and 1.3 ± 0.3% TOC (Lyons and Berner, 1992). Data given in Dusel-Bacon et al. (2011).
Published: 01 November 2012
felsic metaigneous rocks from the Bonnifield district ( Dusel-Bacon et al., 2004 , 2010 ): dotted line = peralkaline metarhyolite from the Mystic Creek Member of the Totatlanika Schist; dash-dot line = felsic rocks from the Sheep, California, and Moose Creek Members of the Totatlanika Schist; dashed
Image
Field, surface sample, and drill core photos from the Bonnifield deposits. A. Red Mountain showing N-dipping, quartz-sericite-pyrite–altered felsic metavolcanic rocks and carbonaceous phyllite (looking northwest). B. Peralkaline metarhyolite with light-colored phenocrysts of quartz, plagioclase, and K-feldspar in a fine-grained quartzofeldspathic and sericitic matrix (DC North zone). C. N-dipping sequence of mostly Mystic Creek Member metavolcanic rocks south of Red Mountain; upper arrow points to peralkaline metarhyolite plug and lower arrow points to a >10-m-thick layer of peralkaline metarhyolite tuff(?). D. Plane-polarized, transmitted light photomicrograph showing likely compacted pumice lapilli; probable lapilli are composed of fine-grained quartz and feldspar, and outlined by fine-grained iron oxide. E. Rhyolite clasts in a phyllitic matrix-supported breccia (DC North zone). F. “Mottled metarhyolite” showing patchy appearance and wavy foliation of the highly silicified rock, cut by veins of pyrite and chalcopyrite (DC North zone). G. Phyllitic mudstone with disseminated pyrite and beige sphalerite, with several ovoid clots of salmon-colored sphalerite (Fosters Creek zone). H. Metarhyolite quartz porphyry cut by purple fluorite veins that are in turn cut by veins and lenses of fine-grained, beige sphalerite and brassy pyrite (Lago Creek zone). I. Semimassive sulfide with subrounded grains of pyrite, laminar sphalerite, and minor chalcopyrite and galena (DC South zone). J. Quartz-K-feldspar-phyric metarhyolite with disseminated pyrite, and discontinuous bands of Fe-carbonate and minor sericite (WTF deposit). K. Layered pyrite-sphalerite-galena-chalcopyrite within carbonaceous argillite (Anderson Mountain deposit). L. Folded and compositionally banded phyllitic and quartz-rich layers with pyrite, chalcopyrite, and sphalerite (Anderson Mountain deposit).
Published: 01 November 2012
, plagioclase, and K-feldspar in a fine-grained quartzofeldspathic and sericitic matrix (DC North zone). C. N-dipping sequence of mostly Mystic Creek Member metavolcanic rocks south of Red Mountain; upper arrow points to peralkaline metarhyolite plug and lower arrow points to a >10-m-thick layer
Journal Article
Published: 19 December 2023
Canadian Journal of Earth Sciences (2024) 61 (4): 471–504.
... Creek Member of Totatlanika Schist; dash-dot line, felsic rocks from Sheep, California, and Moose Creek Members of Totatlanika Schist; dashed line, felsic rocks from Keevy Peak Formation, Healy schist, and Wood River assemblage. (C) La–Th–Sc plot; (D) Zr/10–Th–Sc plot. Tectonic discriminant fields shown...
FIGURES
First thumbnail for: Sulphide petrology and ore genesis of the stratabo...
Second thumbnail for: Sulphide petrology and ore genesis of the stratabo...
Third thumbnail for: Sulphide petrology and ore genesis of the stratabo...
Journal Article
Journal: GSA Bulletin
Published: 01 July 2004
GSA Bulletin (2004) 116 (7-8): 989–1015.
... Schist into the following members, in ascending order: Moose Creek, California Creek, Chute Creek, Mystic Creek, and Sheep Creek (Fig. 3) . Contacts are thought to be mostly depositional, but locally are faulted. Because these members of the Totatlanika Schist are discussed throughout this paper, we...
FIGURES
First thumbnail for: U-Pb zircon and geochemical evidence for bimodal m...
Second thumbnail for: U-Pb zircon and geochemical evidence for bimodal m...
Third thumbnail for: U-Pb zircon and geochemical evidence for bimodal m...
Journal Article
Journal: Lithosphere
Publisher: GSW
Published: 01 October 2014
Lithosphere (2014) 6 (5): 383–398.
...–Sheep Creek) in the western Alaska Range. Refer to Figure 2 for detailed geology and sample localities. (C) Neoproterozoic–Mesozoic stratigraphy of the Farewell terrane with emphasis on Mississippian–Early Permian siliciclastic strata of the Mystic subterrane. Biostratigraphic age constraint from...
FIGURES
First thumbnail for: Sedimentology, U-Pb detrital geochronology, and Hf...
Second thumbnail for: Sedimentology, U-Pb detrital geochronology, and Hf...
Third thumbnail for: Sedimentology, U-Pb detrital geochronology, and Hf...
Journal Article
Journal: Geosphere
Published: 30 May 2018
Geosphere (2018) 14 (4): 1501–1543.
... A, D (eastern part), and E, and widely in area F ( Figs. 2 , 3 ). These units include unnamed Permian strata in area A ( Patton et al., 1980 ), the upper part of the Devonian–Permian Sheep Creek Formation ( Bundtzen et al., 1997 ) in area E, and the Permian (and older?) “Mystic assemblage...
FIGURES
First thumbnail for: The <span class="search-highlight">Mystic</span> s...
Second thumbnail for: The <span class="search-highlight">Mystic</span> s...
Third thumbnail for: The <span class="search-highlight">Mystic</span> s...
Journal Article
Journal: AAPG Bulletin
Published: 01 January 1941
AAPG Bulletin (1941) 25 (1): 23–72.
... to formation rank. Frank C. Greene of the Missouri Survey has been asked to suggest appropriate names for the three limestone members of the Fort Scott formation and he (letter dated, January 5, 1940) has kindly consented. Greene proposes to substitute the name Blackjack Creek limestone for lower Fort...
FIGURES
First thumbnail for: Traverse of Upper Des Moines and Lower Missouri Se...
Second thumbnail for: Traverse of Upper Des Moines and Lower Missouri Se...
Third thumbnail for: Traverse of Upper Des Moines and Lower Missouri Se...
Journal Article
Journal: Lithosphere
Publisher: GSW
Published: 11 October 2017
Lithosphere (2017) 9 (6): 927–952.
... members of the Totatlanika Schist have yielded U-Pb zircon crystallization ages of 373 ± 3 Ma and 372 ± 5 Ma (augen orthogneiss in the California Creek Member of the Totatlanika Schist) and 367 ± 4 Ma to 356 ± 3 Ma (metarhyolite in the Moose Creek and Mystic Creek Members of the Totatlanika Schist...
FIGURES
First thumbnail for: Detrital zircon geochronology of quartzose metased...
Second thumbnail for: Detrital zircon geochronology of quartzose metased...
Third thumbnail for: Detrital zircon geochronology of quartzose metased...
Journal Article
Journal: AAPG Bulletin
Published: 01 July 1975
AAPG Bulletin (1975) 59 (7): 1126–1135.
... exposed in the Arbuckle Mountains of Oklahoma, and, because of this similarity, the formational names of the Simpson have been extrapolated into Texas ( Fig. 3 ). In Texas as well as Oklahoma, the Oil Creek, McLish, and Tulip Creek Formations have basal sandstones: the Connell Sandstone Member, Waddell...
FIGURES
First thumbnail for: Stratigraphy and Conodonts of Simpson Group (Middl...
Second thumbnail for: Stratigraphy and Conodonts of Simpson Group (Middl...
Third thumbnail for: Stratigraphy and Conodonts of Simpson Group (Middl...
Journal Article
Published: 01 June 2013
Bulletin of the Seismological Society of America (2013) 103 (3): 2047–2061.
... the likelihood of a rupture jumping across the stepover. Our new cone penetration test ( CPT ) and trench observations along the Claremont fault at Mystic Lake indicate that the main strand of the Claremont fault has jumped nearly a half kilometer westward into the San Jacinto releasing stepover during the late...
FIGURES
First thumbnail for: Straightening of the Northern San Jacinto Fault, C...
Second thumbnail for: Straightening of the Northern San Jacinto Fault, C...
Third thumbnail for: Straightening of the Northern San Jacinto Fault, C...
Journal Article
Published: 01 March 2019
Journal of Paleontology (2019) 93 (2): 244–259.
... members, which from bottom to top are the Bull Creek Member, Bee Cave Member, Cedar Park Member, Whitestone Member, Keys Valley Member, and an unnamed “upper marl member.” The Bull Creek Member is made up of hard, burrowed, nodular limestone. In the western Austin area of Travis County, the Bull Creek...
FIGURES
First thumbnail for: Early Cretaceous cyclostome bryozoans from the ear...
Second thumbnail for: Early Cretaceous cyclostome bryozoans from the ear...
Third thumbnail for: Early Cretaceous cyclostome bryozoans from the ear...
... the early Paleozoic. Mystic subterrane of the Farewell terrane. Three graywackes from flysch of the Mystic subterrane, Talkeetna quadrangle, were sampled with the expectation that all three were Pennsylvanian. Asample from Pingston Creek is Triassic (as revealed by an interbedded ash dated at ca. 223 Ma...